1; RUN: opt %s -sroa -verify -S -o - | FileCheck %s 2; 3; Test that we can partial emit debug info for aggregates repeatedly 4; split up by SROA. 5; 6; // Compile with -O1 7; typedef struct { 8; int a; 9; int b; 10; } Inner; 11; 12; typedef struct { 13; Inner inner[2]; 14; } Outer; 15; 16; int foo(Outer outer) { 17; Inner i1 = outer.inner[1]; 18; return i1.a; 19; } 20; 21 22; Verify that SROA creates a variable piece when splitting i1. 23; CHECK: call void @llvm.dbg.value(metadata i64 %outer.coerce0, i64 0, metadata ![[O:[0-9]+]], metadata ![[PIECE1:[0-9]+]]), 24; CHECK: call void @llvm.dbg.value(metadata i64 %outer.coerce1, i64 0, metadata ![[O]], metadata ![[PIECE2:[0-9]+]]), 25; CHECK: call void @llvm.dbg.value({{.*}}, i64 0, metadata ![[I1:[0-9]+]], metadata ![[PIECE3:[0-9]+]]), 26; CHECK-DAG: ![[O]] = !DILocalVariable(name: "outer",{{.*}} line: 10 27; CHECK-DAG: ![[PIECE1]] = !DIExpression(DW_OP_bit_piece, 0, 64) 28; CHECK-DAG: ![[PIECE2]] = !DIExpression(DW_OP_bit_piece, 64, 64) 29; CHECK-DAG: ![[I1]] = !DILocalVariable(name: "i1",{{.*}} line: 11 30; CHECK-DAG: ![[PIECE3]] = !DIExpression(DW_OP_bit_piece, 0, 32) 31 32; ModuleID = 'sroasplit-2.c' 33target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 34target triple = "x86_64-apple-macosx10.9.0" 35 36%struct.Outer = type { [2 x %struct.Inner] } 37%struct.Inner = type { i32, i32 } 38 39; Function Attrs: nounwind ssp uwtable 40define i32 @foo(i64 %outer.coerce0, i64 %outer.coerce1) #0 !dbg !4 { 41 %outer = alloca %struct.Outer, align 8 42 %i1 = alloca %struct.Inner, align 4 43 %1 = bitcast %struct.Outer* %outer to { i64, i64 }* 44 %2 = getelementptr { i64, i64 }, { i64, i64 }* %1, i32 0, i32 0 45 store i64 %outer.coerce0, i64* %2 46 %3 = getelementptr { i64, i64 }, { i64, i64 }* %1, i32 0, i32 1 47 store i64 %outer.coerce1, i64* %3 48 call void @llvm.dbg.declare(metadata %struct.Outer* %outer, metadata !24, metadata !2), !dbg !25 49 call void @llvm.dbg.declare(metadata %struct.Inner* %i1, metadata !26, metadata !2), !dbg !27 50 %4 = getelementptr inbounds %struct.Outer, %struct.Outer* %outer, i32 0, i32 0, !dbg !27 51 %5 = getelementptr inbounds [2 x %struct.Inner], [2 x %struct.Inner]* %4, i32 0, i64 1, !dbg !27 52 %6 = bitcast %struct.Inner* %i1 to i8*, !dbg !27 53 %7 = bitcast %struct.Inner* %5 to i8*, !dbg !27 54 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %6, i8* %7, i64 8, i32 4, i1 false), !dbg !27 55 %8 = getelementptr inbounds %struct.Inner, %struct.Inner* %i1, i32 0, i32 0, !dbg !28 56 %9 = load i32, i32* %8, align 4, !dbg !28 57 ret i32 %9, !dbg !28 58} 59 60; Function Attrs: nounwind readnone 61declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 62 63; Function Attrs: nounwind 64declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #2 65 66attributes #0 = { nounwind ssp uwtable "no-frame-pointer-elim"="true" } 67attributes #1 = { nounwind readnone } 68attributes #2 = { nounwind } 69 70!llvm.dbg.cu = !{!0} 71!llvm.module.flags = !{!21, !22} 72!llvm.ident = !{!23} 73 74!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !{}, retainedTypes: !{}, globals: !{}, imports: !{}) 75!1 = !DIFile(filename: "sroasplit-2.c", directory: "") 76!2 = !DIExpression() 77!4 = distinct !DISubprogram(name: "foo", line: 10, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 10, file: !1, scope: !5, type: !6, variables: !{}) 78!5 = !DIFile(filename: "sroasplit-2.c", directory: "") 79!6 = !DISubroutineType(types: !7) 80!7 = !{!8, !9} 81!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 82!9 = !DIDerivedType(tag: DW_TAG_typedef, name: "Outer", line: 8, file: !1, baseType: !10) 83!10 = !DICompositeType(tag: DW_TAG_structure_type, line: 6, size: 128, align: 32, file: !1, elements: !11) 84!11 = !{!12} 85!12 = !DIDerivedType(tag: DW_TAG_member, name: "inner", line: 7, size: 128, align: 32, file: !1, scope: !10, baseType: !13) 86!13 = !DICompositeType(tag: DW_TAG_array_type, size: 128, align: 32, baseType: !14, elements: !19) 87!14 = !DIDerivedType(tag: DW_TAG_typedef, name: "Inner", line: 4, file: !1, baseType: !15) 88!15 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 64, align: 32, file: !1, elements: !16) 89!16 = !{!17, !18} 90!17 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !1, scope: !15, baseType: !8) 91!18 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 3, size: 32, align: 32, offset: 32, file: !1, scope: !15, baseType: !8) 92!19 = !{!20} 93!20 = !DISubrange(count: 2) 94!21 = !{i32 2, !"Dwarf Version", i32 2} 95!22 = !{i32 1, !"Debug Info Version", i32 3} 96!23 = !{!"clang version 3.5.0 "} 97!24 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9) 98!25 = !DILocation(line: 10, scope: !4) 99!26 = !DILocalVariable(name: "i1", line: 11, scope: !4, file: !5, type: !14) 100!27 = !DILocation(line: 11, scope: !4) 101!28 = !DILocation(line: 12, scope: !4) 102